Was at a gun shop the other day, checking out ARs. This is just as the last frenzy was getting into high gear. Anyway, I pick up one to look it over and note that it's a brand I'm unfamiliar with (can't remember it now). The next thing I notice is that the receiver is stamped with a three position safety. In the normal "Fire" position it is stamped with the image of a single bullet and in what would normally be the burst or full auto position on an M16 is the image of three bullets. I know it did not have a full auto fire control group in it (at least not a complete one) as the safety would not move past the stardard semi auto position. At the time I did not know enough to look for an auto sear pin or pin hole, nor to break it open and check the components. This rifle popped back into mind last night and I have done some research so I will be able to tell what's going on next time.

My question is this:
Is this a legal rifle? (I didn't buy it so no problem for me) I have never seen a non NFA/military/LE rifle stamped this way. I have heard the ATF likes to file charge people with "constructive possession" for owning even one full auto part in conjunction with owning an AR. If I were to run across something like it in the future, should I walk away, or simply check it for other NFA criteria? This own this or that but not both at the same time law makes a greenhorn's head spin...

I think BATFE has tried to scare people away from trying to convert AR-15s to full auto by claiming that possession of even one part for an FA gun is illegal even if that one part could not, by itself, make the conversion.

I would be interested in hearing about any real case in which someone was arrested, charged, and prosecuted for simply owning, say, an auto bolt carrier or an FA hammer, whether or not they also owned a semi-auto AR-15.

While BATFE has declared some single parts to be machineguns, like the bolt carrier of the AK-47), AFAIK that has not been done with any AR-16 parts. (Please don't tell me about the shoestring! I mean actual parts.)

My Hk MR556 came from the factory with a F/A hammer and trigger group, just the S/A selector. So I suppose it is legal. They have the BCG designed just a tad different and that is why the BATF let it slide...

__________________
" The strongest reason for the people to retain the right to
keep and bear arms is, as a last resort, to protect
themselves against tyranny in Government...." - Thomas Jefferson

You are correct in that the "wisdom" was that any FA part in an AR-15 was illegal. BATFE contributed to that idea by circulating a poster that was displayed in many gun shops seeming to say that those parts were illegal or if any one was installed in a rifle, the gun would be illegal. But careful reading showed that they used some vary careful wording to imply, but not actually state, that idea.

Yep, its ok to have the full-auto marking on the receiver, because it just that, a roll mark. Until you install a full-auto sear does it become fully automatic; even a FA/M16 BCG is ok because that is not the part that makes the rifle FA.

Thanks again guys, I knew I could get some accurate info here. I know very little about the laws on NFA/full auto. I have considered building an AR (semi-auto of course) at some point in the future and I sure don't want to get in hot water with the Federals over some small part that could be construed as constructive possession.

Just an FYI to those that are trying to distinguish between FA bolt carriers and semi auto carriers on AK. There ain't no difference in the bolt/carrier group. It's all done with the sear, disconnect, and that "magic" third hole. Constructive possession/intent don't mean anything, but that third hole is hard to cover up, so don't do it.

Also note that the rear of an M16 receiver has an obvious sear cut milled in. AR15 receivers do not have this cut. Installing an M16 autosear into an AR15 receiver requires significant machining. That's why Lightning links and DIASs were invented in the 70s.

Speaking of "Lightning Links", they can't work with an M16 style bolt carrier, so a "full-auto" bolt carrier from a lightning link standpoint is an AR15 style carrier. In fact, a lightning link uses a standard AR15 fire control group for full auto fire. The controlled part in question is the Lightning Link itself.

I always add the Full auto option on receivers I make even if it's for civilian use. It adds value to the lower. I also give my customers an option of a custom serial number, logo on the magwell, or any engravings they wish. Most of them always ask for "For Military or Law Enforcement Use Only"

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